On Thu, 25 Aug 2005, Bruce Weyrauch wrote:
Hi,
Infinetix has designed a custom video control board using 4 SM722 chips.
This is a replacement board for an older design using 4 Chips&Technology
CT69000 devices. Our target system uses 8 video controllers driving 8 LCD
panels in a multi-player gaming system. The target operating system is
Linux, using XFree86.
I am having some difficulty getting the multiple controller system working.
I can get a single SM722 evaluation board to start X correctly, and I have
also had success getting a dual monitor system to work using the SM722 eval
board as the primary display, then using a Chips&Technology board as the
secondary display. However, if I reverse this order and install the C&T
board as the primary, then the SM722 as secondary, X fails to start
correctly. I have attached XFree86 log files for these two cases. I have
also attached a log file where two SM722 controllers were installed. Here is
a summary of my testing:
1. SM722 Primary Display, Chips&Technology CT69000 Secondary display - Log
file XFree86.SMprimaryCTsecondary.log.
Both displays worked fine
2. Chips&Technology CT69000 Primary Display, SM722 Secondary display - Log
file XFree86.CTprimarySMsecondary.log.
XFree86 failed and crashed with the following result (excerpted from log):
((WW) Silicon MotionCannot read colourmap from VGA. Will restore with
default
(II) Silicon Motion SMI_GEReset called from smi_driver.c line 1579
(II) Silicon Motion SMI_GEReset called from smi_accel.c line 263
3. SM722 Primary Display, Chips&Technology CT69000 Secnodary display - Log
file XFree86.SMevalSMdigideal.log.
XFree86 failed and crashed with the following result (excerpted from log):
((WW) Silicon MotionCannot read colourmap from VGA. Will restore with
default
(II) Silicon Motion SMI_GEReset called from smi_driver.c line 1579
(II) Silicon Motion SMI_GEReset called from smi_accel.c line 263
I would appreciate some help in debugging this problem, along with any
suggestions you may have.
Well, I'm no expert in Silicon Motion hardware, but a -logverbose 4 log (with
an SM722 as secondary) might provide a clue.
There are also a couple of shots in the dark you can try:
1) Add Option "NoUseBIOS" to SM722 secondary screens;
2) Change SMI_PreInit() to not get rid of pSmi->pInt10 before returning;
3) Uncomment SMI_PreInit()'s calls to xf86SetOperatingState().
Thanks, and good luck.
Marc.
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